Generally I'm not convinced by this argument. I have been to plenty of places where this is not true; natives can have bad taste as well.I rarely contribute to this but after a really really bad meal at Zuma in Ibiza (primarily woeful service) they've given me a free meal at Zuma London tonight to the tune of £250. Probably because I'm regular of 15 years. But would always recommend this place for consistency and amazing fresh sushi. Massively popular with the Japanese which says a lot.